CHEMICAL REACTION ENGINEERING QUIZ

For a fluidised bed reactor, the most suitable/relevant model is a __________ model.

Tank in series

Plug flow

None of these

Bubbling bed

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The sequence in which three CSTR's of volumes 5, 10 and 15 m³ will be connected in series to obtain the maximum production in a second order irreversible reaction is

15, 10, 5

10, 5, 15

10, 15, 5

5, 10, 15

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The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are

2 & 1

2 && 2

1 & 1

11 & 2

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Threshold energy in a reaction is equal to the

Activation energy

Neither A nor B

Normal energy of reactants

Sum of A & B

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Arhenious equation shows the variation of __________ with temperature.

Energy of activation

Rate constant

Frequency factor

Reaction rate

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A liquid decomposes by irreversible first order kinetics and the half life period of this reaction is 8 minutes. The time required for 75% conversion of the liquid will be __________ minutes.

12

16

4

8

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Which of the following fixes the volume of a batch reactor for a particular conversion and production rate?

None of these

Rate constant

Density of mixture

Operating conditions (e.g. pressure and temperature)

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Exothermic reactions are best carried out in

CSTR in series

A CSTR

CSTR followed by a plug flow reactor

A plug flow reactor followed by CSTR

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The catalyst in a first order chemical reaction changes the

Heat of formation of the product

Activation energy

Equilibrium constant

Heat of reaction

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A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ?

Smaller reactor followed by larger one

Either of the arrangement A or B will give the same yield

Large reactor followed by smaller one

Data insufficient, can

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